Year Percent of GDP (Units) 1989 15.723 1990 18.811 1991 18.042 1992 18.421 1993 17.591 1994 19.683 1995 19.103 1996 19.621 1997 20.287 1998 20.337 1999 20.749 2000 20.809 2001 21.017 2002 20.557 2003 20.411 2004 19.370 2005 18.741 2006 18.282 2007 18.184 2008 17.884 2009 19.209 2010 18.348 2011 17.218 2012 17.706 2013 17.325 2014 16.831 2015 17.786 2016 19.011 2017 19.457 2018 20.913 2019 21.720 2020 25.920 2021 27.200 2022 25.891 2023 25.211 2024 24.839 2025 24.847 2026 24.620 2027 24.461 2028 24.336 2029 24.401